B41J 2/1621
Manufacturing processes
Official title: {Manufacturing processes}
B41J2/1621 (Manufacturing processes) appears on 6,930 US grants and 6,400 published applications in this corpus.
Search patents in B41J- Granted patents
- 6,930
- Published applications
- 6,400
- Assignees
- 375
- Inventors
- 4,485
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 13 | 0 |
| 1985 | 10 | 0 |
| 1986 | 14 | 0 |
| 1987 | 22 | 0 |
| 1988 | 22 | 0 |
| 1989 | 34 | 0 |
| 1990 | 33 | 0 |
| 1991 | 29 | 0 |
| 1992 | 33 | 0 |
| 1993 | 39 | 0 |
| 1994 | 41 | 0 |
| 1995 | 65 | 0 |
| 1996 | 61 | 0 |
| 1997 | 94 | 0 |
| 1998 | 117 | 0 |
| 1999 | 137 | 0 |
| 2000 | 166 | 0 |
| 2001 | 270 | 82 |
| 2002 | 299 | 285 |
| 2003 | 269 | 254 |
| 2004 | 222 | 411 |
| 2005 | 256 | 550 |
| 2006 | 326 | 466 |
| 2007 | 317 | 384 |
| 2008 | 344 | 494 |
| 2009 | 368 | 513 |
| 2010 | 435 | 404 |
| 2011 | 458 | 255 |
| 2012 | 296 | 228 |
| 2013 | 263 | 238 |
| 2014 | 245 | 195 |
| 2015 | 257 | 172 |
| 2016 | 173 | 177 |
| 2017 | 169 | 183 |
| 2018 | 158 | 208 |
| 2019 | 195 | 150 |
| 2020 | 138 | 127 |
| 2021 | 120 | 86 |
| 2022 | 83 | 110 |
| 2023 | 88 | 109 |
| 2024 | 83 | 114 |
| 2025 | 68 | 104 |
| 2026 | 66 | 101 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nozzle head, manufacturing method of nozzle head, and droplet discharging device6 Oct 2026US 12,752,532 B2Sijtechnology, Inc.
- Liquid ejection head, manufacturing method for liquid ejection head, and protection tape6 Oct 2026US 12,752,533 B2Canon Kabushiki Kaisha
- Liquid ejection head6 Oct 2026US 12,752,535 B2Canon Kabushiki Kaisha
- Liquid discharge head, liquid discharge apparatus, and bonded unit29 Sep 2026US 12,746,752 B2Ricoh Company, Ltd.
- Apparatus for manufacturing display devices29 Sep 2026US 12,746,754 B2Samsung Display Co., Ltd.
- Molded fluidic dies8 Oct 2026US 2026/0307388 A1Hewlett-Packard Development Company, L. P.
- Liquid ejection unit and method for manufacturing liquid ejection unit8 Oct 2026US 2026/0307389 A1Canon Kabushiki Kaisha
- Apparatus and method for manufacturing display apparatus and electronic device including the display apparatus1 Oct 2026US 2026/0305150 A1Samsung Display Co., Ltd.
- Liquid ejection head substrate and method for manufacturing liquid ejection head substrate10 Sep 2026US 2026/0264403 A1Canon Kabushiki Kaisha
- Jet hole plate, head chip, liquid jet head, liquid jet recording apparatus, and method of manufacturing jet hole plate10 Sep 2026US 2026/0264404 A1Sii Printek Inc.
Most cited
By later US patents
- Liquid jet recording head1,616US 4,558,333 ACanon Kabushiki Kaisha · 1985
- Ink jet head and a method of manufacturing thereof420US 5,666,141 ASharp Kabushiki Kaisha · 1997
- Ink-jet recording head with piezoelectric device and method for manufacturing the same368US 6,142,615 ASeiko Epson Corporation · 2000
- Polymer-based micromachining for microfluidic devices351US 6,136,212 AThe Regents of the University of Michigan · 2000
- Ink jet print device and print head or print apparatus using the same348US 6,019,457 ACanon Information Systems Research Australia Pty. Ltd. · 2000